We'll take the mandate first, because it sets the guardrails, then walk through each funding option the way a good broker would at a whiteboard — what it is, who it fits, and where it bites.
The rule has a bureaucratic name — the Employer Shared Responsibility provision — but the substance is simple. If you're an Applicable Large Employer (ALE), you must offer affordable, minimum-value health coverage to your full-time employees and their dependents, or you can owe a tax penalty. Four terms in that sentence do all the work.
You are if you averaged 50 or more full-time employees, including full-time equivalents, over the prior calendar year. Full-time means 30 or more hours a week (or 130 hours a month). The "equivalents" part trips people up: you take all your part-timers' monthly hours, divide by 120, and add that to your full-time headcount. A company with 44 full-timers and enough part-time hours to add six equivalents is an ALE — even though it "feels" like a 44-person shop. If you're near the line, do this math carefully, because everything below flows from it.
To stay clear of the big penalty, you have to offer coverage to at least 95% of your full-time employees (and their dependents). Miss that threshold, and if even one full-time employee goes to the marketplace and gets a subsidy, you're exposed on essentially your entire full-time workforce (minus a cushion of 30 employees). This is the penalty people call the sledgehammer: a smaller per-head amount, but applied to almost everyone.
An offer only counts if the employee's share of the premium for the cheapest self-only plan doesn't exceed a set percentage of their household income. The IRS resets that percentage every year, so don't hard-code a number — check the current figure at renewal. Because you can't see an employee's household income, the rules give you three safe harbors to measure affordability instead: their W-2 wages, their rate of pay, or the federal poverty line. Pick the one that works for your workforce and apply it consistently.
The plan must cover at least 60% of expected costs (actuarial value) and provide substantial coverage of inpatient hospital and physician services. A skinny plan that dodges hospital coverage doesn't qualify, no matter how it's marketed.
If you do offer to 95%+ but the coverage is unaffordable or not minimum value for some employees, and one of them gets a marketplace subsidy, you owe the second penalty — a larger per-head amount, but only on the specific employees who got the subsidy, not the whole workforce. Both penalty amounts are indexed and rise most years.
ALEs file Forms 1094-C and 1095-C with the IRS each year and give employees a 1095-C, documenting who was offered what. It's the paperwork that shows you met the rule. Get the coverage right and the reporting is routine; get sloppy and it's where penalties surface.
That's the whole mandate. Notice what it does not say: it doesn't tell you how to fund the plan. It just says the offer has to be real and reasonably priced. Which brings us to the interesting part.
Once you're past fifty relatively stable employees, self-funding stops being exotic and starts being the norm. The majority of American workers with employer coverage are on a self-funded plan, and there's a reason it dominates at this size.
Instead of paying a carrier a premium to take your risk, you pay your employees' actual claims out of your own funds. A third-party administrator (TPA) runs the plan — processes claims, manages the network, handles member services — so you're not doing it yourself. And you buy stop-loss insurance to cap your exposure in two ways: specific stop-loss limits what any one person's claims can cost you in a year, and aggregate stop-loss limits what your total claims can reach. Between the two, a self-funded plan protects you from the nightmare scenarios while letting you keep the savings in the good years.
Three big reasons. First, cost: you're no longer paying an insurer's risk margin and profit, and if your group runs healthy, the money that would've been the carrier's profit stays with you. Second, cash flow and data: you pay claims as they come, you hold the reserves, and you get detailed claims data that lets you actually manage your spend — steer to better providers, add programs that target your real cost drivers. Third, and this one is underrated, ERISA. A self-funded plan is governed by the federal ERISA law, which preempts most state insurance regulation. That means you're generally exempt from state benefit mandates and state premium taxes, and — critically for multi-state employers — you can run one uniform plan across every state you operate in, instead of complying with fifty different insurance codes.
You're carrying real risk, capped but real, so you need the financial stability to fund a bad stretch and the discipline to hold reserves. You take on fiduciary responsibility for the plan. And you have to actually understand your stop-loss contract — the attachment points, what's covered, and how renewals work (including whether the carrier can "laser" a known high-cost claimant with a higher individual attachment). This is not a set-it-and-forget-it product; it rewards employers who treat their health plan like the major line item it is.
Best for: stable employers with the cash flow to self-insure, multi-state companies that want one plan everywhere, and any larger group healthy enough to keep the upside instead of handing it to a carrier.
Plenty of 50+ employers stay fully insured, and it isn't wrong — it's a trade of savings for simplicity. You pay a premium, the carrier owns the risk, and you don't touch claims or reserves. One difference from the small-group world matters here: at large group, plans are typically experience-rated, not community-rated. That means your renewal is driven by your own group's claims history. Have a rough year and the increase reflects it; have a great year and you should push your broker to fight for a better renewal.
No claims-risk on your books, no fiduciary weight of running a plan, and total budget predictability within the plan year. For an organization that doesn't want to think about health claims — or one going through a period where cash-flow certainty outranks savings — fully insured is a legitimate, defensible choice.
You still pay the carrier's margin, you get far less visibility into what's driving your costs, and since you're experience-rated, a bad year follows you into renewal anyway — you get the volatility of self-funding's downside without the upside of keeping surplus in the good years. Over a multi-year horizon, a healthy large group usually leaves money on the table staying fully insured.
Best for: larger employers who prioritize simplicity and predictability over savings, or groups whose claims experience or risk tolerance makes carrying any risk unattractive.
Level-funding doesn't disappear at fifty; it's often the natural stepping stone for employers who want self-funding's economics without diving straight into full risk. The structure is the same one covered on the 2–49 page: a self-funded plan wrapped in stop-loss and a fixed monthly payment, with a possible refund if your group runs healthy, and medical underwriting up front.
At this size it plays a specific role: it lets a growing company test the water on self-insurance with the training wheels of a level monthly bill and tighter stop-loss, get its first real claims data, and decide whether to graduate to full self-funding at the next renewal. The same caution applies — underwriting can decline or rate up a high-risk group, and stop-loss availability depends on your state — but for a healthy company in the 50-to-150 range, it's often the smartest bridge between fully insured and true self-funding.
Best for: healthy employers in the 50–150 range easing into self-insurance, or those who want self-funded economics with more predictability than full self-funding.
ICHRA isn't just a small-business tool. For a larger employer, it's a legitimate way to both control cost and satisfy the mandate — if the numbers work for your people. The mechanics are the same as on the 2–49 page: instead of sponsoring a plan, you give employees a tax-free allowance to buy their own individual ACA coverage, and you can split your workforce into permitted classes and fund them differently.
The piece that matters specifically at 50+ is how ICHRA meets the employer mandate. An ICHRA counts as an offer of coverage, and it's treated as affordable if the allowance you provide brings the employee's cost for the lowest-cost silver plan in their area (for self-only coverage) under the affordability threshold. There are location safe harbors that let you base the calculation on the employee's primary worksite. Get the allowance right, and an ICHRA satisfies both the "offer" and "affordability" tests — no group plan required.
You convert an unpredictable, trend-driven premium into a defined contribution you control — a powerful lever when renewals have been punishing. It's especially strong for a geographically distributed workforce, where one group network can't serve everyone well, and for companies that want to get out of the business of sponsoring and administering a plan entirely. Employees keep their coverage when they leave, and you're insulated from your own group's claims volatility.
Your employees have to choose and manage individual plans, which demands real enrollment support to go well. The affordability math has to be done carefully for every class and location so you don't accidentally blow the mandate. And an employee offered an affordable ICHRA can't take a marketplace subsidy, so for a lower-wage workforce you have to check whether your allowance genuinely beats what some employees could get subsidized on their own. It's a strategy that rewards planning, not one you bolt on at the last minute.
Best for: larger employers with distributed workforces, companies fighting a brutal renewal trend who want defined-contribution cost control, and organizations ready to hand plan selection to employees with good support in place.
| Option | Who bears the claims risk | Renewal driven by | State benefit mandates | Satisfies the employer mandate? | Best fit |
|---|---|---|---|---|---|
| Self-funded + stop-loss | You, capped by stop-loss | Your actual claims | Preempted by ERISA | Yes, if the plan is affordable + minimum value | Stable, larger, multi-state, healthy groups |
| Fully insured (large group) | The carrier | Your experience | Apply | Yes, if affordable + minimum value | Simplicity-first employers |
| Level-funded | You, capped by stop-loss | Your claims + underwriting | Largely preempted | Yes, if affordable + minimum value | 50–150 groups easing into self-funding |
| ICHRA | No plan — you fund individuals | The allowance you set | N/A (individual market) | Yes, if the allowance makes coverage affordable | Distributed workforces; cost control |
The right structure at this size comes down to a handful of hard questions.
There's rarely a single obviously-correct answer. There's the structure that best fits your headcount, your people's health, your cash flow, your state, and your appetite for managing a plan versus buying one. The job is to model them against each other with your real numbers — not to accept whichever one shows up on the renewal.
A common myth is that once you're large and self-funded, states stop mattering. Not quite.
At 50+ employees, the gap between a well-chosen structure and a default one is measured in real money and real risk. The way to find your answer is to run your census and claims profile through self-funded, level-funded, fully insured, and ICHRA and compare them honestly. That's our job. We're an independent, carrier-neutral brokerage with no quota to fill for any insurer, so we'll build the side-by-side, walk you through the mandate math, and tell you what we'd do in your seat. Send us your census and current plan; the modeling is free and there's no obligation.
This is general educational information for employers, not legal, tax, or benefits advice. The employer mandate, affordability percentages, penalty amounts, and IRS figures are set by the government and change over time; state insurance rules vary. Confirm the current specifics for your situation with a licensed advisor or your tax counsel before deciding. Reviewed by Matthew T. Giberti (NPN 20698856). Last updated: 2026-07.